After the group suicide of four people, journalists yuu and Rie investigate the reasons behind an endless cycle of suicides, blamed on an infamous Suicide Manual, hidden in a tag-less DVD disk. Said manual is shot in an infomercial fashion, with examples of the best methods to kill yourself and demonstrations by real people. When investigating further, yuu and Rie find out that in Buddhist beliefs, when a person kills himself, he or she is sent to a certain hell, from which they induce other people to commit suicide. But is this what is really happening?